“A3H” Series Variable Displacement Piston Pumps
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YUKEN A3H Series Variable Piston Pump: Complete Technical Specifications
YUKEN A3H Series Variable Piston Pump Core Technical Specifications
|
Model
|
Geometric Displacement (cm³/rev)
|
Minimum Adjustable Flow (cm³/rev)
|
Rated Pressure (MPa)
|
Maximum Pressure (MPa)
|
Continuous Speed (rpm)
|
Maximum Speed (rpm)
|
Weight (kg)
|
|---|---|---|---|---|---|---|---|
|
YUKEN A3H16
|
16.3
|
8.0
|
28.0
|
35.0
|
1800
|
3600
|
14.5
|
|
YUKEN A3H37
|
37.1
|
16.0
|
28.0
|
35.0
|
1800
|
2700
|
19.5
|
|
YUKEN A3H56
|
56.3
|
35.0
|
28.0
|
35.0
|
1500
|
2500
|
25.7
|
|
YUKEN A3H71
|
70.7
|
45.0
|
28.0
|
35.0
|
1500
|
2300
|
35.0
|
|
YUKEN A3H100
|
100.5
|
63.0
|
28.0
|
35.0
|
2100
|
44.9
|
|
|
YUKEN A3H145
|
145.2
|
95.0
|
28.0
|
35.0
|
1200
|
1800
|
60.0
|
|
YUKEN A3H180
|
180.7
|
125.0
|
28.0
|
35.0
|
1000
|
1800
|
70.4
|
Key Specification Notes & Supplementary Parameters
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Pressure Conversion: The maximum pressure of 35.0 MPa is equivalent to 350 kgf/cm², which ensures the pump’s excellent high-pressure resistance in heavy-duty working scenarios.
-
Control Types: The A3H series supports multiple control systems, including “01” pressure compensator type, “09” constant power control type, and “14” load sensing type; detailed parameters for each control type can be consulted with YUKEN.
-
Efficiency: Under the condition of 350 kgf/cm² (35.0 MPa) pressure and 1800 rpm shaft speed, the volumetric efficiency of the A3H series can reach 95% or above, and the overall efficiency can reach 90% or above.
-
Hydraulic Oil Requirements: Recommended hydraulic oils are petroleum-based anti-wear hydraulic oils or R&O (rust and oxidation inhibitor) hydraulic oils with ISO VG 32 or 46, and the viscosity range should be 20 to 400 cst at 0-60°C.
-
Permissible Suction Pressure: The suction port pressure of the pump should be between -0.16 and +0.5 kgf/cm² (-127 mmHg ~ +0.5 kgf/cm²); if the speed exceeds 1800 rpm, adjust the suction pressure to 0 to +0.5 kgf/cm².
-
Pressure Adjustment Range: For models A3H16, A3H37, and A3H56 (01 type), the adjustable pressure range is 5.5 MPa (55 kgf/cm²); for A3H71, A3H100, and A3H145 (01 type), it is 6.3 MPa (63 kgf/cm²); for A3H180 (01 type), it is 5.7 MPa (57 kgf/cm²).
Installation & Operation Specifications
-
Drain Piping Size: For models A3H16 and A3H37, the recommended drain pipe inner diameter is 12 mm or more (1/2”); for A3H56, A3H71, A3H100, A3H145, and A3H180, it is 19 mm or more (3/4”).
-
Mounting: The pump can be installed in flange type or foot type; ensure the “filling port” is at the top during installation to avoid air accumulation.
-
Temperature Range: When using petroleum-based hydraulic oil, the normal operating temperature range is -5°C to 75°C; for special hydraulic oils (such as water-glycol or phosphate ester), the temperature range may vary.
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Process steps：
Customer inquiry: Customers will make inquiries before placing an order to understand product details and communication needs.
Quotation: According to customer needs, provide a formal quotation, including the name, model, quantity, delivery time, payment method, etc. of the goods.
Order confirmation: After the customer confirms the quotation, a formal purchase order will be placed.
Confirm the delivery time: communicate the delivery time with the production department, inform the factory of the order details, and arrange the production plan.
Sign an export contract: After the two parties confirm that it is correct, sign an export contract to establish a trade relationship.
Implement the letter of credit (if applicable): If the payment method of the letter of credit is used, the customer needs to be urged to issue the certificate and review the contents of the letter of credit.
Export stocking: According to the requirements of the contract and the letter of credit, arrange production, purchase raw materials and packaging, and prepare the goods.
Chartering and booking: Contact the freight forwarder to make a booking and arrange the transportation of goods.
Export inspection: Apply to the quality inspection department for export commodity inspection and provide relevant documents.
Apply for a write-off slip: apply for a write-off slip from the foreign exchange management department for subsequent foreign exchange write-off.
Export declaration: Declare exports to the customs and provide documents such as power of attorney for customs declaration, customs declaration form for export goods, commercial invoice, packing list, etc.
